Microservices Interview Secrets: What 10 Years Taught Us

Description

What does a real microservices developer actually do in the industry? In this unfiltered microservices interview–style discussion, two backend engineers with 10+ years of real-world experience talk honestly about how microservices are designed, deployed, scaled, monitored, and debugged in production — not in theory, but in real companies. This is not a tutorial. This is how things actually work in the industry. If you’re preparing for microservices interviews in, or already working as a backend developer and want clarity beyond blog posts and courses, this conversation will give you real perspective. 🌐 Learn More For more free & paid courses, visit 👉 https://www.seleniumexpress.com 🎯 What we discuss in this video ✔️ How microservices evolve from monoliths ✔️ REST vs Kafka — when and why each is used ✔️ How companies handle failures in production ✔️ Circuit breakers, timeouts & resilience (Resilience4j) ✔️ Logging, tracing & observability (Zipkin, Datadog, CloudWatch) ✔️ Service discovery — Eureka vs Kubernetes ✔️ Docker & Kubernetes in real projects ✔️ CI/CD pipelines (Jenkins → Docker → Cloud → K8s) ✔️ Database design in microservices ✔️ SQL vs NoSQL — real decision-making ✔️ Schema changes & backward compatibility ✔️ Transactions & data consistency in distributed systems ✔️ What backend developers must know for interviews in 2026 ✔️ What interviewers actually expect from experienced candidates Chapters / Timestamps 00:00 – Microservices Developer Interview 00:56 – Tools & Tech Stack 02:58 – Microservices vs Monolith 04:36 – Microservices Communication: Sync or Async? 07:25 – WebClient for Modern Spring Boot Apps 08:07 – Why Kafka in Microservices? 11:01 – Kubernetes for Service Discovery 14:36 – Auto Scaling: CPU Usage → New Instance 15:16 – How Actuators Help in Real Time 15:43 – Microservices Health Monitoring 17:04 – Do We Really Need an API Gateway? 19:52 – How Do You Handle Failures in Microservices? 22:23 – Rate Limiter & Circuit Breaker 24:15 – Real-Time Logging in Microservices 26:02 – Handling Schema Changes in Microservices 28:03 – SQL vs NoSQL: Which One to Choose? 30:59 – How Do You Manage Transactions in Microservices? 32:22 – How Do You Test Microservices? 34:20 – Code Handover to QA Team 35:16 – AWS vs GCP: Which Cloud Is Better for Microservices? 40:22 – Deployment & CI/CD: How It’s Done 44:33 – What You Must Know as a Spring Boot Microservices Developer 50:01 – How Much Java Is Enough for Microservices? 50:47 – Why AI Won’t Help You in Production 52:45 – Outro 🎙️ Why this video is different Most videos talk about how microservices should work. This video talks about how microservices actually work. No buzzwords. No fake scenarios. No overengineering. Just real engineering conversations based on real experience. 👨‍💻 Who should watch this? Java / Spring Boot developers Backend & microservices engineers Developers preparing for microservices interviews Engineers transitioning from monoliths to microservices Anyone tired of theoretical microservices content 🛠️ Tech & tools discussed Spring Boot, Java, REST APIs, Kafka, Docker, Kubernetes, AWS, Jenkins, CI/CD, Resilience4j, Zipkin, Datadog, SQL, NoSQL, Distributed Systems 🎓 Related Courses – For Reference 📘 Java Streams & Lambda Expressions https://www.youtube.com/watch?v=nQ4B_EWnAvI&list=PL3NrzZBjk6m-jblxwCFWxtvCeYGv05rmj ⚡ Reactive Java with Project Reactor https://www.youtube.com/watch?v=-AnAd7rR2Qk&list=PL3NrzZBjk6m-RrIn2ndllgEnIHpOmz2v3 🔁 Generics in Java Explained https://www.youtube.com/watch?v=V-Sg8K4oINU&list=PL3NrzZBjk6m8BqPhWC700B1TnG9XUlLdT 🌐 Spring Boot Crash Course https://www.youtube.com/watch?v=F_rGkDeihBg&list=PL3NrzZBjk6m-P7k8tmq1wJOdJ0_ZpPxbp ▶️ Spring Boot Microservices https://www.youtube.com/watch?v=T2rBkbT50TE&list=PL3NrzZBjk6m_n8QZCdnF7Yax36cqWkO9j ▶️ Apache Kafka Essentials https://www.youtube.com/watch?v=MkcrLzbu9tc&list=PL3NrzZBjk6m_dQzvBuD6Yn9Tj9xNTmyhl ▶️ Spring Bootcamp (FREE) https://www.youtube.com/watch?v=ZTv6uQ2AlA8&list=PL3NrzZBjk6m_7F2vyEW8DWmUTmnkb_IS3 ▶️ Spring Live Mock Interview https://www.youtube.com/watch?v=yX2w-Sof95s&list=PL3NrzZBjk6m_Md4nG1uF5113-Z0yVRoA0 🌐 Learn More For more free & paid courses, visit 👉 https://www.seleniumexpress.com 📩 Support Email: seleniumexpress@gmail.com